Shimano Deore Shadow rear derailleur 3x10 optimized for Shimanos new "Dyna-Sys" technology.
The low profile design is intended for more aggressive riding. The derailleur will not contact the chain stays, thus it's super quiet. The super low profile design carries many benefits. It performs smoothly and silently under all conditions and it offers improved durability. The low profiles design saves the RD from damage in narrow passages. Direct routing reduces the risk of snagging. A stronger return spring results in a more crisp shifting feeling. Straight pull shifting cable operation. The new Shimanos "Dyna-Sys" System which is used by this derailleur, offers much more than an additional gear. With this system a closer gear spacing and thus more efficient power transfer is possible.
Designed for Rapidfire and compatible shifters. Shimano recommends the use with "Dyna Sys" HG-X chains and "Dyna Sys" Shimano cassettes.